MESON Chess Problem Database

Problem Display
PID: 269807 (3b4/1p1k1p1N/p4p2/N4K2/1BR5/5Q1B/8/8 w - - 0 1)

Tompuri, Ismo

Tehtavaniekka, 2020

3b4/1p1k1p1N/p4p2/N4K2/1BR5/5Q1B/8/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.Qc6#
    • 1...b6
      • 2.Qc6#
  • Tries
    • 1.Sxb7?
      • threat
        • 2.Qc6#
      • 1...Ke8
        • 2.Qc6#
      • 1...Bc7!
    • 1.Rd4+?
      • 1...Kc7
        • 2.Qxb7#
      • 1...Kc8
        • 2.Qxb7#
      • 1...Ke8!
    • 1.Qe2?
      • threat
        • 2.Sf8#
      • 1...Bxa5
        • 2.Qe7#
      • 1...Bb6
        • 2.Qe7#
      • 1...Be7
        • 2.Qxe7#
      • 1...Bc7!
    • 1.Qe4?
      • threat
        • 2.Sf8#
      • 1...Bxa5
        • 2.Qe7#
      • 1...Bb6
        • 2.Qe7#
      • 1...Be7
        • 2.Qxe7#
      • 1...Bc7!
    • 1.Qxb7+?
      • 1...Ke8
        • 2.Qc6#
      • 1...Bc7!
    • 1.Qe3?
      • threat
        • 2.Sf8#
      • 1...Bxa5
        • 2.Qe7#
      • 1...Bb6
        • 2.Qe7#
      • 1...Be7
        • 2.Qxe7#
      • 1...Bc7!
  • Keys
    • 1.Rc8!
      • 1...Kxc8
        • 2.Qxb7#
      • 1...Ke8
        • 2.Sxf6#
      • 1...Bxa5
        • 2.Kxf6#
      • 1...Bb6
        • 2.Kxf6#
      • 1...Bc7
        • 2.Kxf6#
      • 1...Be7
        • 2.Qxb7#
      • 1...b5
        • 2.Qc6#
      • 1...b6
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::QAB1(A)
  • Tries
    • Try
      • S(E);XP(c)
      • Threat
        • QAB1(A)
      • Vars
        • K(d);S_FLIGHT::QAB(A)
      • Refutation
        • B(f);
    • Try
      • R(D);CHECK
      • Vars
        • K(d);N_GUARD,P-FLIGHT::QAR1(A),XP(c)
        • K(d);N_GUARD,S_FLIGHT::QAB1(A),XP(c)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • S(G)
      • Vars
        • B(f);N_GUARD,XS(E)::QAR1(A)
        • B(f);N_GUARD::QAR1(A)
        • B(f);N_GUARD::QAR1(A),XB(f)
      • Refutation
        • B(f);
    • Try
      • Q(A);
      • Threat
        • S(G)
      • Vars
        • B(f);N_GUARD,XS(E)::QAR1(A)
        • B(f);N_GUARD::QAR1(A)
        • B(f);N_GUARD::QAR1(A),XB(f)
      • Refutation
        • B(f);
    • Try
      • Q(A);CHECK,XP(c)
      • Vars
        • K(d);S_FLIGHT::QAB(A)
      • Refutation
        • B(f);P_SPINB(f)
    • Try
      • Q(A);
      • Threat
        • S(G)
      • Vars
        • B(f);N_GUARD,XS(E)::QAR1(A)
        • B(f);N_GUARD::QAR1(A)
        • B(f);N_GUARD::QAR1(A),XB(f)
      • Refutation
        • B(f);
  • Actual
    • R(D);
    • Vars
      • K(d);N_GUARD,S_CUTB(f),S_FLIGHT,XR(D)::QAB1(A),XP(c)
      • K(d);N_GUARD,P_SPINB(f),S_FLIGHT::S(G),XP(b)
      • B(f);XS(E)::B(B)+K(F),XP(b)
      • B(f);::B(B)+K(F),XP(b)
      • B(f);N_GUARD::QAR2(A),XP(c)
      • P(c);N_GUARD::QAB1(A)
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